Reminds me of that 4chan post where anon gets stopped by a stranger who tries to explain that Aluminum is the best metal. Anon tries to stay calm and explain the iron is the best metal, but the guy just kept going off about Aluminum and started talking about rust and ruined Anon's whole day.

The concept of “best metal” without specifying for which purpose is pretty ridiculous, so to me the anon in your story is equally guilty of causing his own bad day.

Well, no

The best metal is obviously bismuth:

I was going to go with Iron Maiden, but Bismuth is pretty metal.